html{
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  height: 100%;

}
body {
  background:#FFF;
}
.w-hd,w-bd{
  position:relative;
}
.w-hd{
  z-index:99;
}
w-bd{
  z-index:1;
}
.w-row{
  width: 980px;
  margin-right: auto;
  margin-left: auto;
  position: relative;
  &:before{
    content:"";
    display:table;
  }
  &:after{
    content:"";
    display:table;
    clear:both;
  }
}